Tractors and Powertillers:

Type, selection, maintenance and repair of tractors and powertillers; tractor clutches and brakes; power transmission systems  gear trains, differential, final drives and power take-off; mechanics of tractor chassis; traction theory; three point hitches- free link and restrained link operations; mechanical steering and hydraulic control systems used in tractors; tractor tests and performance. Human engineering and safety in design of tractor and agricultural implements.